Well it's pretty easy to search on the net and find details of Osmonds' albums - I don't know why nobody else has done this, but to put everybody out of their misery - here's one I found in a few minutes :

"Back in 1980 I was a married, poor, college student playing bass part time for sessions and weddings and other casuals. I was living in Utah. I got to know some of the guys in Osmond band and did some sessions and gigs with them. A guy named Ike Egan had been playing bass for the family for years. Very good player. One day, I was asked to come a do a session for Jimmy Osmond for his new record. We were to do one song. It was double scale! I needed the money. "

That picture is BOGUS, man!
Jimmy O shouldn't even be on the same stage as those guys!
I'm drawing a blank on the 5th Osmond...there's Donnie, Merrill, Jay, Wayne, & _________

Anyway, saw first these guys on an Andy Williams special(I think)...the next day, the whole damn school was singing "One Bad Apple".
When they appeared on American Bandstand(a few years later), they were "playing"/holding instruments(Beats standing there doing some Brady Bunch choreography). This was in the "Crazy Horses" time frame...